It read: "Thank you for the outpouring of love for Adam and his family. He's on a ventilator and has been sedated to facilitate his recovery. He is receiving excellent care, his condition is improving and we are cautiously optimistic. His family appreciates all the love and support."

The New York-born, New Jersey-raised artist also performed with the bands Tinted Windows and Ivy during his decades-long career.

He was an Emmy-winning songwriter for the TV show My Crazy Ex-Girlfriend, picked up a Grammy in 2010 for his contributions to the comedy album, A Stephen Colbert Christmas, and earned an Oscar nod for writing the theme song to Tom Hanks' 1996 film, That Thing You Do!

Notable deaths of 2020

Christo

Artist Christo stands in front of his artwork "The London Mastaba" built on the Serpentine Lake in London on June 18, 2018. The artist, known for wrapping world landmarks, died on June 1 at the age of 84. Photo by Andy Rain/EPA-EFE

Larry Kramer

Larry Kramer (R) arrives on the red carpet at the "The Normal Heart" screening in New York City on May 12, 2014. The author and AIDS activist died from pneumonia on May 27 at the age of 84. Photo by Dennis Van Tine/UPI | License Photo

Richard Herd

Richard Herd is seen here at a convention in Utrecht, Netherlands, on September 23, 2005. The actor known for roles in "Seinfeld," and "Get Out," died from cancer-related causes on May 27 at the age of 87. Photo by Uja3000/Wikimedia Commons

Jerry Sloan

Utah Jazz head coach Jerry Sloan has words for an official during play against the Golden State Warriors in Oakland, Calif., on January 30, 2011. The coach, a former two-time All-Star NBA player, died due to complications from Parkinson's disease on May 22 at the age of 78. The Photo by Terry Schmitt/UPI | License Photo

Ken Osmond

Actor Ken Osmond poses for a publicity photo, circa 1962. The actor known for his role as Eddie Haskell in "Leave it to Beaver," died on May 18 at the age of 76. Photo courtesy of Wikimedia Commons

Phyllis George

Phyllis George (L) and George Will converse during a book sale at the National Press Club in Washington, D.C., on November 14, 2002. George, known for co-hosting "NFL Today" and "Candid Camera," died on May 16 from a blood disorder at the age of 70. Photo by Roger L. Wollenberg/UPI | License Photo

Lynn Shelton

Lynn Shelton attends the Film Independent Spirit Awards in Santa Monica, Calif., on February 8, 2020. The director, known for films "Humpday" and "Your Sister's Sister," died on May 16 from a blood disorder at the age of 54. Photo Jim Ruymen/UPI | License Photo

Fred Willard

Fred Willard attends the premiere of "Fifty Shades of Black" at Regal Cinemas L.A. Live in Los Angeles on January 26, 2016. The actor died May 15 at the age of 86. File Photo by Jim Ruymen/UPI | License Photo

Franklin "Pepper" Rodgers

Franklin "Pepper" Rodgers was named vice president of football operations for the Washington Redskins at Redskins Park in Ashburn, Va., on December 4, 2000. The former executive and coach died on May 15 at the age of 88. Photo by Roger L. Wollenberg/UPI | License Photo

Jerry Stiller

Jerry Stiller is interviewed at the Family Television Awards in Beverly Hills, Calif., on November 30, 2005. The actor and comedian, known for his roles in "Seinfeld" and "The King of Queens," died on May 11, 2020 at the age of 92. Photo by Phil McCarten/UPI | License Photo

Little Richard

Little Richard performs during a rehearsal for A Capitol Fourth concert on the National Mall in Washington, D.C., on July 3, 2011. The rock 'n' roll icon died May 9 at the age of 87. File Photo by Kevin Dietsch | License Photo

Roy Horn

Roy Horn (R) and Siegfried Fischbacher appear October 3, 2003, on an ad at the Mirage in Las Vegas. Horn died May 8 at the age of 75 from complications from the coronavirus. File Photo by Roger Williams/UPI | License Photo

Don Shula

Former coach Don Shula presents the inaugural Don Shula NFL Coach of the Year Award to Ray Seals of Houston's Madison High School during a press conference in Dallas, Texas on February 4, 2011. The winningest coach of NFL history died on May 4 at the age of 90. Photo by Ian Halperin/UPI | License Photo

Irrfan Khan

Irrfan Khan arrives at the Academy Awards in Hollywood on February 22, 2009. Khan, known for his role in "Slumdog Millionaire," died of a colon infection after battling cancer at the age of 53. Photo by Jim Ruymen/UPI | License Photo

Shirley Knight

Shirley Knight arrives on the red carpet at the Rome Film Festival in Rome on October 22, 2007. The actress, known for her roles in "As Good As It Gets" and "Divine Secrets of the Ya-Ya Sisterhood," died of natural causes on April 22. She was 83. Photo by David Silpa/UPI | License Photo

Brian Dennehy

Brian Dennehy holds up an orchid given to him during their opening night curtain call bows for the Broadway production of "Long Days Journey into Night" in New York City on May 6, 2003. The actor died from cardiac arrest on April 15 at the age of 81. Photo by Ezio Petersen/UPI | License Photo

Phyllis Lyon

Phyllis Lyon (R) and her wife, Del Martin, cut a wedding cake after being married by Mayor Gavin Newsom in the mayors office in San Francisco on June 16, 2008. Lyon, known as a pioneer of same-sex marriage in California, died on April 10 at the age of 95. Photo by Terry Schmitt/UPI | License Photo

Linda Tripp

Linda Tripp heads to her fourth appearance before the Grand Jury at the E. Barrett Prettyman United States Court House, on July 9, 1998. The former White House secretary, known for presenting recordings of Monica Lewinsky disclosing her relationship with President Bill Clinton, died on April 8 at the age of 70. Photo by Robert Visser/UPI | License Photo

John Prine

John Prine arrives for the Grammy Awards in Los Angeles on February 10, 2019. The Grammy Award-winning singer-songwriter died from coronavirus complications on April 7 at the age of 73. Photo by Jim Ruymen/UPI | License Photo

Shirley Douglas

Shirley Douglas (L) cuddles her son Kiefer Sutherland after a star unveiling ceremony inducting Sutherland into Canada's Walk of Fame on June 5, 2005 in Toronto. The actress, known for "Lolita" and "Dead Ringers," died of non-coronavirus-related pneumonia on April 5 at the age of 86. Photo by Christine Chew/UPI | License Photo

Bobby Mitchell

Left to right, past Hall of Fame inductees Leroy Kelly, Bobby Mitchell, and Jim Brown help Cleveland Browns Gene Hickerson on stage at the Enshrinement Ceremony at the Pro Football Hall of Fame in Canton, Ohio on August 4, 2007. Mitchell, the first African American player to suit up for the Washington Redskins, died on April 5 at the age of 84. Photo Stephen M.Gross/UPI | License Photo

Ellis Marsalis

New Orleans jazz pianist Ellis Marsalis Jr. performs at the New Orleans Jazz and Heritage Festival in New Orleans on April 29, 2012. The musician died from coronavirus complications on April 1 at the age of 85. Photo by Skip Bolen/EPA-EPE

Adam Schlesinger

Adam Schlesinger of the band Fountains of Wayne performs at the Virgin Festival at Pimlico Raceway in Baltimore on August 4, 2007. The bassist died on April 1 from coronavirus complications at the age of 52. Photo by Alexis C. Glenn/UPI | License Photo

Bill Withers

Bill Withers arrives on the red carpet at the ASCAP 100 Centennial Awards in New York City on November 17, 2014. The soul singer, known for "Ain't No Sunshine" and "Lean on Me," died from heart complications on March 30 at the age of 81. Photo by John Angelillo/UPI | License Photo

Sen. Tom Coburn

Sen. Tom Coburn, R-Okla., speaks at a press conference on Capitol Hill in Washington, D.C., on June 3, 2014. The former lawmaker died March 28 at the age of 72. File Photo by Kevin Dietsch/UPI | License Photo

Joseph Lowery

Rev. Joseph Lowery makes remarks in front of the Lincoln Memorial to mark the 50th anniversary of Dr Martin Luther King's " I Have a Dream" speech August 24, 2013, in Washington, D.C. The civil rights leader died March 27 at the age of 98. File photo by Mike Theiler/UPI | License Photo

Jimmy "Toy Cannon" Wynn

Former Houston Astros All-Star Jimmy "Toy Cannon" Wynn delivers an open-air service for the Salvation Army on Main Street in Cooperstown, N.Y., on July 30, 2006. The outfielder died on March 27 at the age of 78. Photo by Bill Greenblatt/UPI | License Photo

Fred "Curly" Neal

Harlem Globetrotters Fred "Curly" Neal, shown in this April 4, 2008 at Busch Stadium in St. Louis, died on March 26 at the age of 77. Known for his flashy dribbling skills, Neal played in more than 6,000 games over 22 years for the Globetrotters. File Photo by Bill Greenblatt/UPI | License Photo

Mark Blum

Left to right, Mark Blum, Rosanna Arquette, Aidan Quinn and Susan Seidelman arrive for the 25th Anniversary Screening of "Desperately Seeking Susan" in New York on September 23, 2010. Mark Blum, who recently starred in "You" and "Succession," died on March 27 from coronavirus complications at the age of 69. File Photo by Laura Cavanaugh/UPI | License Photo

Terrence McNally

Terrence McNally arrives for the Dramatists Guild Fund's 50th Anniversary Gala at the Mandarin Oriental Hotel in New York on June 3, 2012. The Tony-winning playwright, known for "Ragtime" and "Master Class," died on March 24 from coronavirus complications at the age of 81. Photo by Laura Cavanaugh/UPI | License Photo

Manu Dibango

Manu Dibango performs at the Les Escales Festival in Saint-Nazaire, France, on July 26, 2019. The Cameroonian musician died on March 24 from COVID-19 at the age of 86. Photo by Selbymay/Wikimedia Commons

Kenny Rogers

Kenny Rogers performs at the Hammersmith Apollo in London on April 3, 2009. The country music icon known for his "Islands in the Stream" duet with Dolly Parton died on March 20 at the age of 81. Photo by Rune Hellestad/UPI | License Photo

Al Worden

Al Worden served as the command module pilot for Apollo 15 in 1971, the fourth lunar landing mission and the first to use a lunar rover. The astronaut died on March 18 at the age of 88. Photo courtesy of NASA

Roger Mayweather

Floyd Mayweather Jr. (L) and his uncle and trainer former champion Roger Mayweather approach the weigh in stand for Floyd Mayweather's fight with Juan Manuel Marquez in Las Vegas on September 18, 2009. Roger Mayweather died on March 17 at the age of 58 after a long battle with diabetes and other health issues. Photo by Roger Williams/UPI | License Photo

Lyle Waggoner

Actor Lyle Waggoner of "Wonder Woman" stands for a publicity photo for the film in 1976. The actor known for his roles in "Wonder Woman" and "The Carol Burnett Show" died on March 17 at the age of 84. Photo courtesy of ABC Studios/Wikimedia Commons

Max Von Sydow

Max Von Sydow arrives on the red carpet before the screening of the film "The BFG" at the Cannes International Film Festival in Cannes, France, on May 14, 2016. The actor, known for his roles in "The Exorcist" and "Game of Thrones," died on March 8 at the age of 90. Photo by David Silpa/UPI | License Photo

Secretary-General Javier Perez de Cuellar

Former United Nations Secretary-General Javier Perez de Cuellar is seen with wife Marcela on January 1, 1982, at the start of his tenure in the post, which would last for 10 years. The secretary who presided over multiple international crises during his tenure died on March 5 at the age of 100. Photo courtesy of John Isaac/United Nations

James Lipton

Talk show host James Lipton attends the Creative Arts Emmy Awards at Microsoft Theater in Los Angeles on September 10, 2016. The "Inside the Actors Studio" host died on March 2 at age 93. Photo by Jim Ruymen/UPI | License Photo

Jack Welch

Former chairman and CEO of General Electric, Jack Welch attends a forum with business leaders hosted in the State Dining Room of the White House in Washington, D.C., on February 3, 2017. The businessman died on March 2 at age 84. Photo by Michael Reynolds/EPA

Hosni Mubarak

Egyptian President Hosni Mubarak meets with U.S. President Barack Obama in the Oval Office of the White House in Washington on August 18, 2009. Mubarak held office for 30 years before resigning amid an uprising in 2011. He died on February 25 at age 91. Pool Photo by Dennis Brack/UPI | License Photo

Katherine Johnson

NASA research mathematician Katherine Johnson is photographed at her desk at Langley Research Center in 1966. Portrayed in "Hidden Figures," Johnson calculated the path for American's first space mission and the first moon landing. She died February 24, 2020 at age 101. UPI File Photo | License Photo

Ja'Net Dubois

Ja'net Dubois (L) of "Good Times" appears backstage after the show was honored with the Impact Award at the TV Land Awards in Santa Monica, Calif., on March 19, 2006. The actress died on February 18, 2020, at the age of 74. Photo by Jim Ruymen/UPI | License Photo

Jason Davis

Jason Davis attends the "Recess: School's Out" premiere in Hollywood in 2001. The voice actor died on February 16 at age 35. Photo by Russ Einhorn/UPI | License Photo

Lynn Cohen

Cast member Lynn Cohen attends the premiere of "The Hunger Games: Catching Fire" in Los Angeles on November 18, 2013. The actress died on February 15 at age 86. Photo by Jim Ruymen/UPI | License Photo

Orson Bean

Orson Bean and his wife, actress Alley Mills, arrive for the premiere of "Equalizer 2" at the TCL Chinese Theatre in Los Angeles on July 17, 2018. Bean died on February 7, at age 91. File Photo by Jim Ruymen/UPI | License Photo

Kirk Douglas

Kirk Douglas attends his son Michael's Hollywood Walk of Fame ceremony in Los Angeles on November 6, 2018. One of the last actors of Hollywood's Golden Age, Douglas died on February 5 at age 103. Photo by Jim Ruymen/UPI | License Photo

John Andretti

John Andretti walks to his car on pit road prior to the NASCAR Coke Zero 400 at Daytona International Speedway in Daytona Beach, Fla., on July 4, 2009. Andretti, versatile race-car driver and nephew of Mario Andretti died from a battle with colon cancer at the age of 56 on January 30, 2020. Photo by Michael Bush/UPI | License Photo

Kobe and Gianna Bryant

Former Los Angeles Lakers guard Kobe Bryant, his wife Vanessa (L) and their daughters Natalia (2-R) and Gianna (R) attend the premiere of "A Wrinkle in Time" on Feb. 26, 2018 in Los Angeles. Kobe Bryant and his 13-year-old daughter Gianna were killed in a helicopter crash in Calabasas, Calif., on January 26. Photo by Jim Ruymen/UPI | License Photo

Jim Lehrer

Longtime television news host Jim Lehrer receives a Lifetime Achievement award from the Press Club of St. Louis on February 21, 2018. The PBS NewsHour co-founder died on Thursday at the age of 85. Photo by Bill Greenblatt/UPI | License Photo

Rocky Johnson

Actor Dwayne "The Rock" Johnson (C) hugs his mother Ata Johnson and father, WWE Hall of Fame wrestler, Rocky Johnson, during a hand and footprint ceremony at the TCL Chinese Theatre in Los Angeles on May 19, 2015. Rocky Johnson, also known as Wayde Douglas Bowles, died on January 15, 2020, at the age of 75. Photo by Jim Ruymen/UPI | License Photo

Don Larsen

Don Larsen tips his hat at Yankee Stadium before the New York Yankees play the Baltimore Orioles in the final game at Yankee Stadium in New York City on September 21, 2008. The Yankees pitcher is the only person in history to throw a perfect game in a World Series. He died on January 1, 2020, at the age 90. Photo by John Angelillo/UPI | License Photo

Nick Gordon

Nick Gordon (R) stands with his girlfriend, Bobbi Kristina Brown, at the premiere of "Sparkle" in Los Angeles on August 16, 2012. Gordon died on January 1, 2020, due to a drug overdose at the age of 30. Photo by Jim Ruymen/UPI | License Photo

David Stern

NBA commissioner David Stern attends an NBA preseason game in Paris on October 6, 2010. The former commissioner died on January 1, 2020, at the age of 77. Photo by David Silpa/UPI | License Photo